Econo master cyl's=??

Heres one for the group = esp= old skl & the econo experts. Whats the differences between q 1967 econo master cylinder> and say 68-69 as the parte listings differ? Location of lines ? mounting areas, size internally? Not asking on power just standard masters.They should all be dual line cylinders. Thanx

61-66 single and the 67 dual have a mount point that the brake pedal pivots on. Newer ones dont have that which is why theres no other bolt in replacement besides the 67 dual bowl for the 61-66 single bowls.

[i]Thanx tim - Therefore -?? is there a replacement for the 67 master-im not noticing one? Whats a subsitute?

Dennis at D and D has a bracket that the brake pedal mounts to and a modern day Ford Ranger dual master cylinder slips up inside of. The specs on the Ranger one are the same as the 67 so it works perfect plus you get remote fill. Of course if you already have a 67 that's bad you can just have it resleeved by White Post or Sierra with a new kit installed and it's guaranteed for life.
Vic,aka Old Skool, sells a remote fill setup for the 67 that's awsome too.